This report analyses the cost of lithium-ion battery energy storage systems (BESS) within Europe's grid-scale energy storage segment, providing a 10-year price forecast by both system and tier one components. An executive summary of major cost drivers is provided for reference, reflecting both global and regional market dynamics that may impact capital costs during the outlook period. Lithium Iron Phosphate (LFP) batteries are the focus of the report, reflecting the stationary BESS market's movement away from Nickel Manganese Cobalt (NMC) chemistries. The pricing outlook for NMC 811 BESS is provided as a reference within this report. This report will be published annually. Pricing dynamics for the US and Asia Pacific grid-scale markets will be covered in separate reports.